[PATCH v3] vfprintf-internal: Replace alloca with malloc.

[Paul Eggert]

On 2023-05-15 11:50, Joe Simmons-Talbott via Libc-alpha wrote:
> +	    args_value[cnt].pa_user = malloc (args_size[cnt]);
> +	    if (args_value[cnt].pa_user == NULL)
> +	       break;

Shouldn't an error be returned if a printf function runs out of memory 
internally?

Also, that function already uses a scratch buffer; why not grow the 
scratch buffer instead of calling malloc separately?